LinkedIn's "only useful function" is insufficient to overcome its "deal killer": it's a farce. I have never met an I.T. manager whose LinkedIn profile was remotely close to reality. They all claim the same B.S. (detail oriented, results driven, digital transformation, blah blah blah blah blah blah), enabling them to get hired into roles that ruin the lives of programmers like me. Better they should just be honest and say, "Switch jobs every 3 years when they find out I'm a total poser but I promise to stay out of the programmers' way".
I prefer to share my experience here:
https://eddiots.com/1038
https://eddiots.com/28
https://eddiots.com/1840
https://eddiots.com/983